Plug and play
Plug and play is the name for a number of technologies used in computing. Technologies that support plug and play allow to connect new devices to a computer. After a short while, these devices can simply be used. When they are no longer needed, they can be disconnected again. Plug and play does not require the user to load a specific driver to access the device.
Plug and play is used to refer to both the configuration of devices at boot time, as well as to system that support adding a device later on. Examples for systems that support plug and play are USB and Firewire.